由于氧气的干扰,使用教材上的方法进行析氢腐蚀实验时会出现异常的倒吸现象,借此引导学生利用手持技术探究其中的原因,再让学生运用探究结果改进,得到多种新的实验装置,让学生形成发现问题、解决问题的能力以及创新能力。 Due to the interference of oxygen, the method of teaching materials used in hydrogen evolution experiment will appear when abnormal suction phenomenon, to guide students to explore the reasons for using hand-held technology, and then allow students to use the findings to improve and get a variety of new experimental devices , Let students form the problem of discovery, problem solving and innovation.